Performance Minarelli Roller Weights, Part #169-121

15x12 Performance Roller Weights. Minarelli, 50cc 2-stroke 1PE40QMB Performance Roller Weights. We recommend starting performance upgrades by changing the variator roller weights before engaging in any performance upgrades. Heavier roller weights = A slower take off speed with more acceleration and a higher top speed. Lighter roller weights = A faster take off speed with less acceleration and lower top speed. Roller Diameter: 15mm. Roller Width: 12mm.